/// <summary>
/// Configures the voice.
/// </summary>
private static void ConfigureVoice()
{
SpWaveFormatEx fFormat = new SpWaveFormatEx();
ttSVoice = new TTSVoice();
//ttSVoice.SPVoice.Voice = ttSVoice.SPVoice.GetVoices("gender=female", "").Item(0);
StartService("AudioSrv", 20 * 1000);
/* set the audio out to the telephony device*/
ttSVoice.MMSysAudioOut.DeviceId = (int)w2cDrv.Device.Info.WaveOutDrvID;
WriteLog("Sound DeviceId: " + w2cDrv.Device.Info.WaveOutDrvID.ToStr());
fFormat.FormatTag = 1;
fFormat.Channels = 1;
fFormat.SamplesPerSec = 8000;
fFormat.AvgBytesPerSec = 16000;
fFormat.BlockAlign = 2;
fFormat.BitsPerSample = 16;
ttSVoice.MMSysAudioOut.Format.SetWaveFormatEx(fFormat);
/* Prevent SAPI from changing the wave format when the device changes*/
ttSVoice.SPVoice.AllowAudioOutputFormatChangesOnNextSet = false;
ttSVoice.SPVoice.AudioOutputStream = ttSVoice.MMSysAudioOut;
}
/// <summary>
/// Generate() will be called only once if there is no typed-text; it
/// should use dictation. Generate() will be called a second time if
/// there is typed-text; the second pass should use both dictation and
/// context-free-grammar (ie, Command and Control: a Rule that's based
/// on the typed-text).
/// </summary>
void Generate()
{
#if DEBUG
logfile.Log();
logfile.Log("Generate() _generato= " + _generato);
#endif
_offset = 0;
Confidence_def_count = 0;
// was "2" but MS doc says not needed on its end.
// and I don't see grammar id #2 defined on this end either.
_recoGrammar = _recoContext.CreateGrammar();
// _recoGrammar.DictationLoad(); // ("Pronunciation") <- causes orthemes to print as phonemes instead of words
switch (_generato)
{
case Generator.Dictati:
if (_recoGrammar.Rules.FindRule(RULE) != null)
{
#if DEBUG
logfile.Log(". set Rule INACTIVE");
#endif
_recoGrammar.CmdSetRuleState(RULE, SpeechRuleState.SGDSInactive);
}
#if DEBUG
logfile.Log(". set Dictation ACTIVE");
#endif
_recoGrammar.DictationSetState(SpeechRuleState.SGDSActive);
break;
case Generator.Dialogi:
#if DEBUG
logfile.Log(". set Dictation INACTIVE");
#endif
_recoGrammar.DictationSetState(SpeechRuleState.SGDSInactive);
if (_recoGrammar.Rules.FindRule(RULE) == null)
{
#if DEBUG
logfile.Log(". . add \"" + RULE + "\" Rule");
#endif
ISpeechGrammarRule rule = _recoGrammar.Rules.Add(RULE,
SpeechRuleAttributes.SRATopLevel,
1);
rule.InitialState.AddWordTransition(null,
_text,
" ",
SpeechGrammarWordType.SGLexical,
RULE,
1);
_recoGrammar.Rules.Commit();
}
#if DEBUG
logfile.Log(". set Rule ACTIVE");
#endif
_recoGrammar.CmdSetRuleState(RULE, SpeechRuleState.SGDSActive);
// logfile.Log(". max alternates(pre)= " + _recoContext.CmdMaxAlternates);
// _recoContext.CmdMaxAlternates = 3;
// logfile.Log(". max alternates(pos)= " + _recoContext.CmdMaxAlternates);
break;
}
#if DEBUG
logfile.Log(". create (SpFileStream)_fs");
#endif
_fs = new SpFileStream();
#if DEBUG
logfile.Log(". (SpFileStream)_fs CREATED");
#endif
// _fs.Format.Type = SpeechAudioFormatType.SAFT44kHz16BitMono;
#if DEBUG
logfile.Log(". Open Wavefile _fs");
#endif
_fs.Open(Wavefile);
#if DEBUG
logfile.Log(". _fs.Format.Type= " + _fs.Format.Type); // SpeechAudioFormatType.SAFT44kHz16BitMono
SpWaveFormatEx data = _fs.Format.GetWaveFormatEx();
logfile.Log(". . SamplesPerSec= " + data.SamplesPerSec);
logfile.Log(". . BitsPerSample= " + data.BitsPerSample);
logfile.Log(". . AvgBytesPerSec= " + data.AvgBytesPerSec);
logfile.Log(". . Channels= " + data.Channels);
logfile.Log(". . BlockAlign= " + data.BlockAlign);
logfile.Log(". . FormatTag= " + data.FormatTag);
logfile.Log(". . ExtraData= " + data.ExtraData);
// filestream byte-data ->
// int bytes, pos = 0;
// object o = new byte[2];
// while ((bytes = _fs.Read(out o, 2)) > 0)
// {
// var buffer = (byte[])o;
// logfile.Log(pos + " : " + buffer[1] + " " + buffer[0]); // treat as little-endian shorts
// pos += bytes;
// }
// _fs.Seek(0);
logfile.Log(". assign _fs to _recognizer.AudioInputStream");
#endif
_recognizer.AudioInputStream = _fs; // <- start Recognition <--
#if DEBUG
logfile.Log("Generate() DONE");
logfile.Log();
#endif
}
